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Fastener for attaching together workpieces having aligned holes therethrough

A technology for fasteners and alignment holes, applied to threaded fasteners, connecting components, thin plate connections, etc., which can solve the problems of high production, storage and distribution costs

Active Publication Date: 2019-12-31
FAIRCHILD FASTENERS EURO VSD GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since such oversized fasteners must be manufactured in very small quantities, when large quantities of fasteners are used, for example in the aerospace industry, the constraints of production, storage and distribution in the work area where these fasteners are used cost becomes very high

Method used

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  • Fastener for attaching together workpieces having aligned holes therethrough
  • Fastener for attaching together workpieces having aligned holes therethrough

Examples

Experimental program
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Embodiment Construction

[0030] A fastener 10 is disclosed for securing a plurality of workpieces together and adapted to be positioned in aligned holes 60a, 60b in such workpieces 50a, 50b. In an exemplary embodiment, fastener 10 may include a pin or bolt member defining a shank 11 .

[0031] Although not shown in the drawings, the fastener 10 may also include a nut. In other embodiments, instead of a nut, the fastener 10 may comprise a collar, in particular a swaged collar. Additionally, the fastener 10 may also include a sleeve member (also not shown in the figures).

[0032] In an exemplary embodiment, workpieces 50a, 50b may be formed from a variety of materials including composite materials, metals, or composite / metal structures, or any combination thereof. In particular embodiments, workpieces 50a, 50b may be constructed of titanium, aluminum, graphite composites, or any combination thereof.

[0033] Specific reference figure 1, the exemplary embodiment of the invention consists of a conven...

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PUM

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Abstract

The invention relates to a fastener (10) for attaching together workpieces (50a, 50b) having aligned holes therethrough, the fastener (10) comprising a shank portion (11) and a head portion (13) provided at one end of the shank portion (11), the diameter of the shank portion (11) and / or of the head portion (13) being selected such that the fastener (10) can be installed in the aligned holes in close tolerance. The fastener (10) further comprises an oversizing structure (20), said oversizing structure (20) being firmly bonded to at least a part of the shank portion (11) and / or the head portion(13) in order to oversize at least the part of the shank portion (11) and / or the head portion (13) such as to allow the fastener (10) to be installed in aligned holes (60a, 60b) having a diameter larger than that required for the fastener (10) without the oversizing structure (20).

Description

technical field [0001] The present invention relates generally to a fastener, particularly a high strength fastener, for attaching together workpieces having aligned holes therethrough, and more particularly to a fastener as described below A fastener includes a shank and a head disposed at one end of the shank. The fastener also includes an oversized structure securely coupled to at least a portion of the stem and / or head. The oversized feature has an outer diameter to increase the effective diameter of the shank of the fastener and is in bearing contact with the workpiece when the fastener is in place through the alignment hole in the workpiece. [0002] The present invention is primarily directed to, but not necessarily limited to, aeronautical structures. Shear loading of fasteners is especially prevalent in this construction and in precision fasteners most often used in tight tolerance holes. The present invention aims to solve the problems related to the installation ...

Claims

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Application Information

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IPC IPC(8): F16B5/02F16B33/06
CPCF16B5/025F16B33/06F16B5/02
Inventor 于尔根·罗辛门德特·布森简·多梅耶希德·德泽伯托尔斯滕·廷佩
Owner FAIRCHILD FASTENERS EURO VSD GMBH